The cause of cheek pain is anatomically speaking, the most common cheek pain is temporomandibular arthritis, that is, when opening the mouth and laughing or eating hard food, this position of our temporomandibular joint is the joint where the mandible and temporal bone are connected, when opening the mouth wide the temporomandibular joint will have an activity. When the temporomandibular joint is in a certain posture and position for a long time under stress, and then strain it, temporomandibular arthritis will occur. The characteristics of this temporomandibular arthritis are very clear, that is, the patient’s condition is aggravated when opening the mouth or when we open the mouth wide or laugh, or when chewing hard things, and when pressing with the hand, obvious pressing pain can be found, and this is the diagnosis of temporomandibular arthritis. Mild temporomandibular arthritis only requires braking and reducing activity to be able to relieve the symptoms, while more severe cases can be relieved by topical topical painkillers or oral analgesics, along with rest. If TMJ arthritis also occurs repeatedly, it may be necessary to go to dentistry or pain department to inject anti-inflammatory drugs in the local TMJ to eliminate TMJ arthritis, and that TMJ-induced cheek pain will also be relieved. Of course this is one of the most common causes, there are also some more rare causes, such as trigeminal neuralgia stimulated, facial pain like discharge, this cheek pain is different from TMJ arthritis, TMJ is soreness and pain when opening the mouth, trigeminal neuralgia is discharge-like pain, the patient is suddenly in pain like being hit by electricity, this kind of pain usually occurs, professional doctors are needed to help diagnose and treat.